Variant 3-54122720-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018398.3(CACNA2D3):c.7G>C(p.Gly3Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000383 in 1,195,872 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 29)

Exomes 𝑓: 0.00041 ( 0 hom. )

Consequence

CACNA2D3
NM_018398.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.873

Variant links:

Genes affected

CACNA2D3 (HGNC:15460): (calcium voltage-gated channel auxiliary subunit alpha2delta 3) This gene encodes a member of the alpha-2/delta subunit family, a protein in the voltage-dependent calcium channel complex. Calcium channels mediate the influx of calcium ions into the cell upon membrane polarization and consist of a complex of alpha-1, alpha-2/delta, beta, and gamma subunits in a 1:1:1:1 ratio. Various versions of each of these subunits exist, either expressed from similar genes or the result of alternative splicing. Research on a highly similar protein in rabbit suggests the protein described in this record is cleaved into alpha-2 and delta subunits. Alternate transcriptional splice variants of this gene have been observed but have not been thoroughly characterized. [provided by RefSeq, Jul 2008]

CACNA2D3 links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0411793).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CACNA2D3	NM_018398.3 linkuse as main transcript	c.7G>C	p.Gly3Arg	missense_variant	1/38	ENST00000474759.6	NP_060868.2
LOC124909381	XR_007095914.1 linkuse as main transcript	n.386+337C>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CACNA2D3	ENST00000474759.6 linkuse as main transcript	c.7G>C	p.Gly3Arg	missense_variant	1/38	1	NM_018398.3	ENSP00000419101	P1	Q8IZS8-1
	ENST00000666932.1 linkuse as main transcript	n.1187+337C>G		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes

AF:

0.000180

AC:

AN:

149936

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000122

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000133

Gnomad ASJ

AF:

0.000290

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000416

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000252

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.000412

AC:

431

AN:

1045830

Hom.:

Cov.:

AF XY:

0.000411

AC XY:

203

AN XY:

493490

show subpopulations

Gnomad4 AFR exome

AF:

0.0000465

Gnomad4 AMR exome

AF:

0.000419

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000464

Gnomad4 OTH exome

AF:

0.000220

GnomAD4 genome

AF:

0.000180

AC:

AN:

150042

Hom.:

Cov.:

AF XY:

0.000218

AC XY:

AN XY:

73314

show subpopulations

Gnomad4 AFR

AF:

0.000122

Gnomad4 AMR

AF:

0.000132

Gnomad4 ASJ

AF:

0.000290

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000416

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000252

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000208

Hom.:

Bravo

AF:

0.000185

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 08, 2023

The c.7G>C (p.G3R) alteration is located in exon 1 (coding exon 1) of the CACNA2D3 gene. This alteration results from a G to C substitution at nucleotide position 7, causing the glycine (G) at amino acid position 3 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.25

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.71

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.056

T;T;T

Eigen

Benign

-1.0

Eigen_PC

Benign

-0.92

FATHMM_MKL

Benign

0.19

LIST_S2

Benign

0.48

.;T;.

M_CAP

Pathogenic

0.47

MetaRNN

Benign

0.041

T;T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

0.0

N;N;N

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

0.30

N;N;N

REVEL

Benign

0.056

Sift

Benign

0.52

T;T;T

Sift4G

Benign

0.082

T;T;T

Polyphen

0.0

B;B;B

Vest4

0.10

MutPred

0.24

Gain of MoRF binding (P = 0.0122);Gain of MoRF binding (P = 0.0122);Gain of MoRF binding (P = 0.0122);

MVP

0.043

MPC

0.31

ClinPred

0.20

GERP RS

-2.9

Varity_R

0.047

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over